body, html{
    height: 100%;
}
.centerType{
    width: 760px;
    margin: 0 auto;
    overflow: hidden;
}
iframe{
    width:100%;
    display: block;
    height:573px;
    border: 0px;
}

.banner{
    width: 700px;
    height: 300px;
    /* border: 1px solid #000; */
    margin: 20px auto;
    position: relative;
    overflow: hidden;
}

.banner ul{
    width: 800%;
    height: 300px;
    display: flex;
    position: absolute;
    top: 0;
    left: 0;
}
.banner ul li{
    width: 700px;
    height: 300px;
}
.banner ul li img{
    width: 100%;
    height: 100%;
}

.banner ol{
    position: absolute;
    bottom: 15px;
    display: flex;
    left: 50%;
    transform: translateX(-50%);
}


.banner ol li{
    width: 20px;
    height: 5px;
    background: white;
    border-radius: 5px;
    margin: 5px;
}
.banner ol li:hover,ol li.active{
    cursor: pointer;
    background-color: gray;
}

.banner div{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    font-size: 20px;
    padding-left: 10px;
    padding-right: 10px;
    box-sizing: border-box;
}
.banner div a,div a{
    text-decoration: none;

}